I can't comment on the Supertrickler as I've never owned one, but I thoroughly enjoy my AutoTrickler V4. I bought the AutoTrickler + A&D FX-120i package back in January of '24, and have had no problems with it. For me, it beats the heck out of manually throwing and trickling - and has been super accurate. I've owned an RCBS Chargemaster in the past, but it wasn't nearly as consistent. And I've loaded manually with both Hornady and Harrell powder throwers - trickling up to charge with a manual trickler, weighing on a Creedmoor Sports TRX-925 scale. It works, but a slower, more tedious process. For me, I don't think I could be more pleased.